A2 verb #5,000 most common 3 min read

재다

To measure the size, length, or weight of something.

Explanation at your level:

You use 재다 when you want to know how big or heavy something is. For example, if you have a ruler, you 재다 the length of your book. It is a very useful word for school and home.

At this level, you will use 재다 for specific tasks like 키를 재다 (measuring height) or 몸무게를 재다 (weighing yourself). It is a common verb in health and shopping contexts.

As you progress, you will see 재다 used in more complex ways, such as 시간을 재다 (timing something). It is also used when you are 'measuring' a situation or someone's mood before you speak.

In professional or academic settings, 재다 can imply a careful assessment. You might hear it when discussing the 'measurement' of success or the 'calculation' of risks in a project.

Advanced users understand the nuances of 재다 in idiomatic expressions. It reflects a cognitive process of evaluation, where the speaker is 'weighing' options or 'sensing' the hidden motives of others.

At the mastery level, 재다 is appreciated for its versatility. It bridges the gap between physical science (precise measurement) and human psychology (evaluating social dynamics), showing how language reflects our need to quantify the world around us.

Word in 30 Seconds

  • Means to measure length, weight, or size.
  • Used in both physical and metaphorical contexts.
  • Essential verb for daily life and science.
  • Regular conjugation with common idioms.

The Korean verb 재다 is a fundamental action word used whenever you need to quantify something. Whether you are checking your height against a wall or weighing ingredients for a cake, this is the word you use.

Think of it as the universal verb for measurement. It is simple, direct, and essential for daily life. When you use 재다, you are essentially establishing a numerical value for a physical property of an object.

Beyond the literal, it often appears in contexts where someone is calculating or 'weighing' their thoughts. Just like you measure a piece of wood before cutting it, you might 'measure' a person's intentions or a situation before making a big decision.

The word 재다 has deep roots in the Korean language, tracing back to Middle Korean forms. It has historically been associated with the act of 'counting' or 'estimating' values.

In ancient agricultural society, the ability to 재다 was vital for trade and land management. Farmers needed to measure grain yields and the size of their plots to ensure fairness. This practical necessity solidified the word's place in the lexicon.

Over centuries, the word evolved from strictly physical measurement to include abstract concepts like 'weighing' the pros and cons of a situation. It is a classic example of how a concrete action can expand into a metaphorical cognitive process.

You will use 재다 in many common scenarios. The most frequent use is 길이를 재다 (to measure length) or 무게를 재다 (to measure weight).

It is a neutral, everyday verb. You don't need to worry about high-level formality; it fits perfectly in casual conversations with friends or in professional settings when giving instructions.

Common collocations include 체온을 재다 (to take a temperature) and 치수를 재다 (to take measurements for clothing). These are standard phrases that every learner should memorize to sound natural.

1. 눈치를 재다: To catch on or sense what is happening in a social situation.

2. 간을 재다: To test the waters or check the atmosphere before acting.

3. 마음을 재다: To try to guess someone's true feelings.

4. 뜸을 재다: To hesitate or stall while making a decision.

5. 저울질을 재다: To compare two options carefully to see which is better.

Grammatically, 재다 is a regular verb. When conjugated, it follows the standard rules for verbs ending in 'ㅐ'. For example, the past tense is 쟀다 (jaet-da).

The pronunciation is straightforward: 'jae' sounds like the 'ae' in 'cat' but with a 'j' sound at the start. Ensure you hold the vowel sound clearly.

It is often used with the object marker -를/을. For example: 책상을 재다 (measure the desk). It is a transitive verb, meaning it almost always takes a direct object.

Fun Fact

It is related to the word '자' (ruler).

Pronunciation Guide

UK /dʒɛ.da/

Short and sharp vowel.

US /dʒɛ.da/

Clear 'ae' sound.

Common Errors

  • Pronouncing as 'ji-da'
  • Ignoring the 'ae' sound
  • Adding extra syllables

Rhymes With

배다 깨다 매다 새다 때다

Difficulty Rating

Reading 1/5

Very easy

Writing 1/5

Very easy

Speaking 2/5

Simple

Listening 2/5

Simple

What to Learn Next

Prerequisites

이다 하다

Learn Next

측정하다 계산하다 비교하다

Advanced

평가하다 가늠하다

Grammar to Know

Object Marker

길이를 재다

Verb Conjugation

재다 -> 쟀다

Contractions

재었다 -> 쟀다

Examples by Level

1

길이를 재요.

Measure the length.

Present tense.

2

키를 재요.

Measure height.

Common collocation.

3

무게를 재요.

Measure weight.

Standard object.

4

시간을 재요.

Measure time.

Useful phrase.

5

허리를 재요.

Measure waist.

Clothing context.

6

온도를 재요.

Measure temperature.

Health context.

7

양을 재요.

Measure amount.

Cooking context.

8

거리를 재요.

Measure distance.

Navigation.

1

8 examples

1

8 examples

1

8 examples

1

8 examples

1

8 examples

Common Collocations

길이를 재다
무게를 재다
체온을 재다
시간을 재다
치수를 재다
허리를 재다
양을 재다
온도를 재다
거리를 재다
눈치를 재다

Idioms & Expressions

"눈치를 재다"

To sense the mood

그는 분위기를 금방 눈치챘다.

casual

"간을 재다"

To test the waters

먼저 간을 재보고 결정하자.

casual

"뜸을 재다"

To hesitate

너무 뜸 재지 말고 말해.

casual

"저울질을 재다"

To weigh options

두 사람 사이에서 저울질을 재고 있다.

neutral

"마음을 재다"

To guess feelings

그 사람 마음을 어떻게 재겠어?

neutral

"속을 재다"

To probe someone's mind

남의 속을 재지 마라.

neutral

Easily Confused

재다 vs 재우다

Similar sound

To put to sleep vs to measure

아이를 재우다 vs 길이를 재다

재다 vs 제다

Spelling

Incorrect spelling

Use 재다 instead

재다 vs 자다

Similar look

To sleep vs to measure

나는 자다 vs 길이를 재다

재다 vs 달다

Similar meaning

To weigh vs to measure

무게를 달다 vs 길이를 재다

Sentence Patterns

A1

Subject + Object + 를/을 + 재다

나는 길이를 재다.

A2

Subject + Time + 를/을 + 재다

나는 시간을 재다.

B1

Subject + Object + 를/을 + 재어보다

나는 옷을 재어보다.

B2

Subject + Situation + 를/을 + 재다

그는 상황을 재다.

C1

Subject + 마음 + 을 + 재다

그녀는 마음을 재다.

Word Family

Nouns

측정 Measurement

Verbs

재어보다 To try measuring

Related

Ruler (tool)

How to Use It

frequency

9/10

Formality Scale

측정하다 (Formal) 재다 (Neutral) 재 (Casual)

Common Mistakes

재다를 '재우다'와 혼동 재다
재우다 means to put someone to sleep.
재다를 '제다'로 표기 재다
Spelling error.
목적어 없이 사용 무엇을 재다
Needs an object.
과거형 '쟀다'를 '재었다'로 사용 쟀다
Contraction is preferred.
비유적 의미 오용 문맥 확인
Ensure the context fits.

Tips

💡

Memory Palace

Visualize a giant ruler.

💡

Daily Use

Use it when cooking.

🌍

Cultural Insight

Used in health checkups.

💡

Grammar Shortcut

Always keep the object before it.

💡

Say It Right

Focus on 'ae'.

💡

Avoid '재우다'

Don't confuse with sleep.

💡

Did You Know?

It has ancient roots.

💡

Study Smart

Use flashcards.

💡

Context

Great for shopping.

💡

Conjugation

Remember the contraction.

Memorize It

Mnemonic

Jae-da sounds like 'Jae' (a name) measuring a 'da' (dart).

Visual Association

A tailor using a tape measure.

Word Web

ruler scale size weight

Challenge

Measure three things in your room.

Word Origin

Korean

Original meaning: To count or measure

Cultural Context

None.

Directly maps to 'measure'.

Used in many cooking shows. Common in medical dramas.

Practice in Real Life

Real-World Contexts

At the doctor

  • 키를 재요
  • 몸무게를 재요
  • 체온을 재요

In the kitchen

  • 양을 재요
  • 시간을 재요

At a tailor

  • 치수를 재요
  • 허리를 재요

In a social situation

  • 눈치를 재요
  • 간을 재요

Conversation Starters

"오늘 키를 재봤어요?"

"요리할 때 양을 재나요?"

"시간을 재면서 공부해요?"

"남의 눈치를 자주 재나요?"

"무게를 재는 기계가 있나요?"

Journal Prompts

Describe a time you had to measure something.

Why is it important to measure things accurately?

Write about a situation where you had to 'read the room' (눈치를 재다).

What tools do you use most often to measure?

Frequently Asked Questions

8 questions

It is neutral and widely used.

쟀다.

Yes, '시간을 재다'.

Yes.

Yes, '측정하다'.

Yes, '무게를 재다'.

Yes, many.

측정.

Test Yourself

fill blank A1

키를 ___.

Correct! Not quite. Correct answer: 재다

We measure height.

multiple choice A2

Which tool is used to '재다'?

Correct! Not quite. Correct answer: Ruler

Ruler measures length.

true false B1

Can you '재다' a feeling?

Correct! Not quite. Correct answer: True

Metaphorically, yes.

match pairs B1

Word

Meaning

All matched!

Matching nouns to meanings.

sentence order B2

Tap words below to build the sentence
Correct! Not quite. Correct answer:

Subject-Object-Verb order.

Score: /5

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